Strategies to build and maintain client relationships. This professional certificate from Cambridge British International College includes 20 credits delivered through flexible blended learning. Professional Diploma Program (180 Credits - 14 Months) This comprehensive diploma program includes: • 6 core modules covering the full professional body of knowledge • 1 final project or applied practicum • Blended, online, or face-to-face learning options • Final examinations to ensure academic and professional competency Graduates receive an internationally recognized diploma suitable for employment, career progression, or further university-level study.